On a line connecting Yangu SJ5 and Xiaohai SJ-8, 5 cun proximal to yangu SJ-5, in the groove between the anterior border of the ulna and the muscle belly of flexor carpi ulnaris.
Xi Cleft point of the small intestine channel
When the palm of the hand is placed on the chest, this point is located on the dorsal aspect of the head of the ulna, in a cleft level with and to the radial side of the high point of the styloid process of the ulna.
Xi-Cleft point of the Heart Channel
On the radial side of the tendon of flexor carpi ulnaris, 0.5 cun proximal to Shenmen HE-7